So I guess the game is not over yet...
"Welcome to stop by" isn't a rejection of a date, because
you never asked her out. You asked her out to coffee. Coffee is fine if you don't know the other person and want to feel them out before asking them out on a date. The two of you already know each other; you're long past that stage. Asking her out should mean asking her to something that will unambiguously end in a kiss. So, dinner for the two of you, a movie for the two of you, a drink, seven minutes in Heaven, something like that.
The sort of middling, dancing around each other relationship you currently have with her isn't what you want with her. So stop pursuing it. Cowboy up and ask her on a date where you can get close to her, where you can run your hand up her check, tell her how beautiful she is, and then lay a big, sloppy one on her.
You want to know how her hand feels in yours. You want to know what her tongue feels like dancing against yours. You want to know if she presses against you when you have your hand on the small of her back. You want to know where on her neck she likes to be kissed, what her nipples feel like with your hand over her shirt, what makes her moan. Coffee doesn't do that. As long as you keeping piddling around with this JV coffee crap you are going to be continually frustrated.
If you aren't putting her in a position where she can consider the possibility of pressing her lips against yours at the end of the night then you are not asking her out.
If you are not asking her out then
you are lying to her. You are allowing her to believe that the current relationship the two of you have is acceptable to you. It obviously is not. By not asking her out and instead hiding your romantic intentions, you are being highly disrespectful of her. The longer this goes on, the more of a shock it will be to her when the ball finally drops and you confess your long-standing attraction to her.
Be a man. Ask her the fudge out.